I think he's simply asking what makes an article good for SEO or bad for SEO.
From what I heard, the longer the article the better and make sure to include the keywords your targeting inside your article, but don't overdue it. It also helps to include other keywords that are kinda related. And include backlinks to other articles you may have written about the subject. Theres a term for this but I forgot it. Its when articles reference each other like a loop.